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Alborosie
2 years ago
6

Explain or show that the point (5,-4) is a solution to this system of equations

Mathematics
1 answer:
Harman [31]2 years ago
8 0

Answer:

You could substitute the point (5,-4) into each equation

Step-by-step explanation:

x=5    y=-4

3x-2y=23

3(5)-2(-4)=23

15+8=23

23=23

2x+y=6

2(5)+(-4)=6

10-4=6

6=6

The points go into each equation which proves that the point (5,-4) is the solution.

(i don't know if I did this right, I apologize if I didn't

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Answer:

The number is -4.

Step-by-step explanation:

Let the number be n.

Given:

Max adds 7 to a number.

hence it is given as n+7

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Hence the equation can be written as;

-4(n+7)=3n

Now Solving the above equation to find value of n we get;

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The value of n is -4.

Now when we add 7 to number -4 we get answer as 3.

And when the sum is multiplied by -4 we get answer -12.

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Hence when the sum is multiplied by -4  it is equal to 3 times of same number.

Hence from above we can say that the number is -4.

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3 years ago
Consuelo living room is in the shape of a rectangle and haa an area of 360 square feet. the width of the livingroom is 5/8 its l
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360=LW 
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vova2212 [387]

Answer:

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Step-by-step explanation:

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